/*
 * Copyright 2009 SHOP.COM
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.shop.opensocial.mediated.types;

/**
 * Independent mediator for corresponding OpenSocial type
 *
 * @author Jordan Zimmerman
 */
public class UserIdMediator
{
	public enum Type
	{
		ME,
		VIEWER,
		OWNER,
		USERID;
	}

	private final Type type;
	private final String userId;

	public UserIdMediator(Type type, String userId)
	{
		this.type = type;
		this.userId = userId;
	}

	public Type getType()
	{
		return type;
	}

	public String getUserId()
	{
		return userId;
	}

	public String getUserId(SecurityTokenMediator token)
	{
		switch ( type )
		{
		case OWNER:
			return token.getOwnerId();
		case VIEWER:
		case ME:
			return token.getViewerId();
		case USERID:
			return userId;
		default:
			throw new IllegalStateException("The type field is not a valid enum: " + type);
		}
	}
}
